William Perlman/The Star-LedgerCB Prince Amukamara will miss a few months.

The Giants suffered a major blow tonight when first-round pick Prince Amukamara fractured the fifth metatarsal bone in his left foot. Amukamara will undergo surgery to have a screw inserted in the foot. He will be sidelined for an undetermined period of time.

Amukamara, who only signed his contract on Friday, was participating in his second practice with the Giants. There was nothing apparent about the play when the injury occurred. He walked out of the indoor practice facility on his own power with a member of the Giants’ medical staff by his side. X-rays were conducted and the fracture was revealed.

The injury is especially crippling for Amukamara because he did not have any of the offseason training activities and missed the first week of training camp. Missing a few months is not out of the question, so Amukamara’s return from injury might not occur until the regular season.

It’s a similar injury to the one tackle William Beatty suffered last season in the season opener. He missed two months and returned to play seven more games.